I am running ML0 - Act 3 with this, it is fast, safe, and enjoyable break from my main. I'm sure there are far better builds, but this works pretty well.

Important Gear:

Burning Axe of Sandis with high fire bonus: I choose 3 skills that do fire damage, this increases the damage of those skills, and is a very cheap weapon.

Blackthorne Coat and Legs: Cheap source of EHP, with a little focus on resists/vit/armor on other items I never have to worry about health.

Thing of the Deep: Pickup radius so I get almost all the gold with no effort.

The rest of the gear is thrown together from drops/cheap AH purchases, upgrading as I'm able.

Skills:

I keep Spirit Barrage applied all the time (20 second duration), firebomb I set in the middle of concentrated enemies, and locust I cast pretty much anywhere and it spreads. With the free damage from pets/barrage/firebomb and locust spreading to everything close by, trash mobs are defeated as I run by. I think if I got my damage up another 20k or so I could just run through maps only pausing for uniques/i63s.

I did manage to kill everything reasonably fast with these skills. I kept grave injustice for some reason instead of fierce loyalty because I saw no point to fierce loyalty. Also, I don't know what else to use. Locust swarm is by far the most effective weapon, but I used pestilence because it spreads very fast and I don't have that axe.

Pros: Lazy. Super lazy. As in, I cast three spells and have nothing to do lazy. Things died because I'm completely overgeared for MP0. Build is viable.

Cons: I want something to do when I see a treasure goblin rather than stand near them and hope my DOTs hit it. I think you need some sort of primary attack. I'd demand it. Maybe ... splinters or something - anything. When I hit an elite pack, it's not like the skellymancers of old - they minions don't completely tank and they don't completely kill the creatures. I have to do something to help it along.

Observations: I got a bit bored not having any offensive skills to spam, so I decided to clear tower of the damned with just the massive amounts of pets. I watched all the tiny minions attack things, but the only creatures that died were the ones that my gargantuan was attacking. When I met a boss pack, I summoned my fetishes and watched... as they did almost no damage. I sincerely don't think the fetish army skill is worth using at all. They are only there for 20 seconds and they do almost meaningless damage while they're there.

You really don't need blood ritual. You cast three spells every ... so often. There's no reason for it. Use gruesome feast for the damage.

After this build, I think I'm going to replace acid cloud (acid rain) with locust swarm in my farming build. Even when it doesn't crit, locust swarm cleared the trash so fast that I didn't even have to think about it.

Great feedback, thank you. Let me know if you play with it and find anything interesting to try out. The thing I like about the lazy aspect is that I can click chests and the like while the dots are ticking, and not have a "wasting time" feeling.

I suspect from your comments, that my impression of the extra damage from fetish army is based on my hoping it was good rather than it being good. I'm going to replace fetish army with a second attack, just want to find something unusual, not extremely costly, that can help with elites. Maybe exploding frogs will work.

You have four attack skills, but MP0 your locusts should really be killing all non-elites very quickly, and your bears will drop any elites you do come across. I just don't really see the need for the other two damage skills.

Spirit Walk & Horrify will greatly enhance your move speed, and GI will reset their cooldown timers so they're nearly always available, allowing you to zoom through to the next pack.

Thanks for the reply and recommendation. I switched passives around (and will continue to), the thing with the attacks I have are they are all AoE / set and forget kinds of skills, which is really the goal of this attempt at a viable unusual build. Bears I am avoiding like the (plague? I guess WDs don't avoid plagues so not sure what to compare it to...).

The build I have listed, it works, it is easy with cheap gear, and for me it is actually engaging and fun. I like that I have pets doing damage, the spirit over my head casting spirits at random for a long duration and extremely high damage, fire bomb turned into a turret, all supporting the main damage skill of locusts (which is just zenlike fun to watch) and then a sixth skill which can be most anything, im using exploding toads for now.

I tried the blazing spiders, and the damage seemed lower than exploding toads. Dire bats had 1 rune I loved, the one where they swarm in a PBAoE around the WD, but the radius was just too low for most fights to make it worth while. If that had a larger radius it would be a virtual must, as it is I couldn't keep it.

Toads i like with the rest of the build, because it operates like another set and forget, just with a bit more setting and control. It defeats elites quickly even with my low damage output (60k range), and randomly hops around to destroy other enemies as well.

I am not completely sold on it, really not finding a final skill that i like a ton with the build. The either use too much mana with too little damage, or they are a pain to use (like you note with toads). I'm still playing around with different options, I might even take Shifty76's advice and add run speed with spirit walk to increase XP by moving group to group faster.